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Calculate A+B-C+D

Look at the series (7, 16, 43, B, A, 1096, 3283, 9844, 29527, C, 265723, D, ...), determine the pattern, and find the unknown values (A, B, C and D) and calculate A+B-C+D!

Correct answers: 19

The first user who solved this task is Nasrin 24 T.

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Hermann Boerhaave

Born 31 Dec 1668; died 23 Sep 1738 at age 69. Dutch physician, botanist and chemist, who as professor of medicine taught medical students at the sickbed. He has been called the “founder of clinical teaching” since he founded a hospital where he combined practice with clinical instruction, a method continued in modern medical education. He was the first to describe the sweat glands, and that smallpox is transmitted only by contact. Although his discoveries were few, he collated existing medical knowledge. He wrote medical textbooks popular both during and after his lifetime. In 1718, he became professor of chemistry, and published Elementa Chemiae (Elements of Chemistry, 1724), an intellegible work that eluciated the subject. He also made contributions in the field of botany. Sometimes called the “Dutch Hippocrates,” he was the most eminent physician since Galen.«

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